<template>
  <h2>我是About的内容</h2>
</template>

<script>
export default {
    name:'About',
    beforeDestroy(){
      console.log('About组件即将被销毁了')
    },
    mounted(){
      console.log('About组件挂载完毕')

    }
}
</script>

<style>

</style>